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God is sending us a message!!!! Be kind to animals. Don't pick flowers. Don't walk on the grass.

I have a theory. God left these important rules out of the original text, because He knew that being kind to animals was not really relevant 2000 years ago. And there aren't a lot of flowers or grass in the desert. So He knew NOT to include these as part of the original commandments, but in his omnipotence, realized that 2k years later, He would update his teachings via this miracle.